Particle Dark Matter Searches Outside the Local Group
Regis, M; Xia JQ(夏俊卿); Xia, JQ; Cuoco, A; Branchini, E; Fornengo, N; Viel, M
刊名PHYSICAL REVIEW LETTERS
2015
卷号114页码:241301
学科分类Physics
DOI10.1103/PhysRevLett.114.241301
通讯作者夏俊卿
文章类型Article
英文摘要If dark matter (DM) is composed by particles which are nongravitationally coupled to ordinary matter, their annihilations or decays in cosmic structures can result in detectable radiation. We show that the most powerful technique to detect a particle DM signal outside the Local Group is to study the angular cross-correlation of nongravitational signals with low-redshift gravitational probes. This method allows us to enhance the signal to noise from the regions of the Universe where the DM-induced emission is preferentially generated. We demonstrate the power of this approach by focusing on GeV-TeV DM and on the recent cross-correlation analysis between the 2MASS galaxy catalogue and the Fermi-LAT gamma-ray maps. We show that this technique is more sensitive than other extragalactic gamma-ray probes, such as the energy spectrum and angular autocorrelation of the extragalactic background, and emission from clusters of galaxies. Intriguingly, we find that the measured cross-correlation can be well fitted by a DM component, with a thermal annihilation cross section and mass between 10 and 100 GeV, depending on the small-scale DM properties and gamma-ray production mechanism. This solicits further data collection and dedicated analyses.
类目[WOS]Physics, Multidisciplinary
收录类别SCI ; EI
WOS记录号WOS:000356221000002
引用统计
被引频次:26[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228431
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
中国科学院高能物理研究所_粒子天体物理中心
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GB/T 7714
Regis, M,Xia JQ,Xia, JQ,et al. Particle Dark Matter Searches Outside the Local Group[J]. PHYSICAL REVIEW LETTERS,2015,114:241301.
APA Regis, M.,夏俊卿.,Xia, JQ.,Cuoco, A.,Branchini, E.,...&Viel, M.(2015).Particle Dark Matter Searches Outside the Local Group.PHYSICAL REVIEW LETTERS,114,241301.
MLA Regis, M,et al."Particle Dark Matter Searches Outside the Local Group".PHYSICAL REVIEW LETTERS 114(2015):241301.
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